Adjusting device for music-rolls.



0. FLBTTNER. I ADJUSTING DEVICE FOR MUSIC ROLLS.

APPLICATION IILED NOV. 15, 1909.

955,506 Patehtd Apr. 19,1910.

Q I I v as? WM CHARLES FLETTNEB,

PATENT OFFICE.

OF NEW YORK, N. Y.

ADJUSTING DEVICE ron MUSIC-ROLLS.

To all-whom it may concern:

Be it known that I, Cn'xnnss Fnnrrxnn, a citizen of the United States of America, re- SldlIlg at No. 537 East One Hundred and Thirty-ninth street, in the cit of New York,

in the county of New -Yor and State of New York, have invented certain new and useful Improvements in Adjustingv Devices for Music-Rolls, of which the following is a specification. i

' The present invention relates to adjusting devices for music rolls, in self-playing musical instruments, and has for its object to provide a device which upon the accidental displacement of the music roll to either side of the music tracker, will instantaneously cause the music roll to adjust itself in proper position.

My invention is illustrated in the accompanying drawing in which similar reference letters. denote corresponding parts and in p which Figure 1 is a front elevation Fig. 2 a cross section and Fig. 3 a rear view of the device. I

In the drawing a denotes the music roll, b, b', the s ools thereof and 0 the pneumatic the rear terminate in short plpes 0'', connected to-bellows pneumatics of the action (not shown). The spindles j, j, of the spools b, b, are connected by means of double armed levers 2', i, and rods f, g, to bellows f, 9, so that'when the latter are caused to contract the spools of the music roll will be drawn into one or the other direction, as

' the case may be, thereby readjusting the displaced music roll. Thus far, the adjustn'ig- 40 device is old.

. The novelty of myiinvention resides in the means for controlling the operation of will now proceed to describe.

The bar 0 is provided at its ends with cylindrical bores d in which are loosely borne studs d. The forward ends of these studs are rounded off and are adapted to normally project outward of the bar. These studs, of which there are two, are arranged at such points of the'bar, that the side edges of the music roll which is fed past the bar, are in close proximity to said studs.

Specification of mm. Intent. Application filed Hoverhber 15 1909. Serial No. 528,097.

Patented Apr. 19, 1910.

The bellows f and g, are provided with flexible exhaust pipes e, e, which are connected to pi es 6, arranged in the bar 0 at both ends 0 the latter and below the studs (1'. The open ends of these pipes c, are controlled by valves h. that are o erated by the studs 03 the opposite ends of pipes c being connected to the main exhaust. The valves are secured to plates h which are hinged to the bar a above the studs (1 and are provided with counterwei hts h, tending to return the valves into clised position. The slightest pressure upon the studs d caused by' the displacement of the music roll will cause the opening of the valves h pertive bellows will contract and in well known manner instantaneously return the displaced music roll into the proper position. \Vhat I claim and desire to secure by Letters Patent is z-- 1. In self-playing musical instruments, the combination with the pneumatic music roll tracker, of a music roll, an adjusting device for the music roll, comprising movable studs in the said tracker at each side of the music roll, bellows operatively (mun-(10d with the music roll, exhaust pipes leading from the bellows, valves on the tracker connected with said pipes and operated by said CHARLES FLETTNER.

Witnesses:

MAX. ORDMANN, ARTHUR D. STRAIIL. 

